CAT6 supports 10 Gigabit ethernet, but only over a distance of 164 feet. CAT6A cables are CAT6’s successor and do support 10 Gigabit ethernet over the full distance of 328 feet. After 164 feet, CAT6’s speed is limited to the same as CAT5e at 1 Gigabit. The tighter twist throughout the CAT6 wires also allows for two-way communication, a capability that neither CAT5 nor CAT5e have. At the end of the day, the main differences in the capabilities of CAT6 and CAT5 are:
- Two-way communication
CAT6 is faster overall but has a similar speed to CAT5e over long distances. It can also offer two-way communication. Besides that, CAT6 and CAT5 both have a maximum distance of 328 feet, so it really just depends on what speed you receive over the distance.